import java.util.Arrays;
import java.util.Collections;

public class MyLinkListDemo {
    public static void main(String[] args) {
        MyLinkList list=new MyLinkList();
        list.addlast("b");
        list.addlast("c");
        list.addlast("d");
        list.addfirst("a");
        System.out.println(list.toString());
        System.out.println("helloworld文件建好了");







    }




}

